What are TypeScript declaration files?
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What are TypeScript declaration files?
TypeScript declaration files, with a .d.ts extension, provide type information about JavaScript libraries. They help TypeScript understand the types of variables, functions, and objects in those libraries.
Why do I need declaration files for JavaScript libraries?
Declaration files allow TypeScript to provide type checking and IntelliSense for JavaScript libraries, improving code quality and developer experience.
How do I create a declaration file?
To create a declaration file, you can define the types and interfaces for the JavaScript code you want to describe. Start with the declare keyword followed by the type definitions.
Can I use declaration files for my own TypeScript code?
Yes, you can create declaration files for your own TypeScript modules to expose types to other modules or projects.
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